What was found
LAX FLIGHT NR 2420: AFTER PUSH BACK, ELEVATOR FEEL CAUTION ILLUMINATED AND FO'S PFD AND 'ATT FAIL', 'HDG FAIL' AND 'IHSI FAIL' MESSAGES. AIRCRAFT RETURNED TO GATE. MAINTENANCE REALIGNED NR 1 AND NR 2 AHRS. NO MESSAGES DISPLAYED ON NR 1 OR NR 2 PFD. NO ASSOCIATED CAUTION OR WARNING MESSAGES. INSPECTED NOSE GEAR AND TO BAR LUGS. NO DISCREPANCIES FOUND. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.